The overn does not get up to temperature when I preheat it. I preheat to 350 and the buzzer goes off alerting me that the preheat is done and the oven is only at 200 degrees. My baked goods were not baking so I put a thermomater in to check and low and behold it seems to be way off. What should I do?

call the landlord with your problem

If oven is electric pleace check that the heating elements are ok, could be that only one or two elements could be the only heaters hence luck power to maintain temparature when open or gets too slow to preheat.

what is your oven if is gas or electric, if is gas easy to preheat by using lower heating element, if electric? that your unit have convection? or not? coz some probelm of the oven is, 1 if the oven is no convection or your oven is single heating in upper element,if your oven have a timer and cut off in 15minute? dont use timer,use a manual timer by it your self,if you want to reach the degrees that you want check your oven if der a lower and upper heating element with convection function,that the one is the most easy way to reach the degree that you want to reach.

There's a few things that can cause this.

1. Check to see if the both that Bake and Broil elements (burners) are heating up. Check the Broil element in Broil mode.

- during pre-heat the Broil element gets cycled on and off for short time durations to speed up the heating. If the Bake element is not working, then the oven will heat, but very slowly and never reach high temperature.

2. If the elements are both working, then it's possible that you have a bad temperature sensor.

- this is a temperature dependent resistance device that should measure 1080 ohms at 70 deg F (room temp).

3. If #1 and #2 are ok, then the problem is with your oven clock/control unit. We rebuild these at fixyourboard.com.

More than likely, its your oven thermometer thats taking a half hour to read correctly. The oven is probably getting there sooner. If you had a digital thermometer, the read would come quicker. So save your money,nothing wrong with your stove.

Technician just left our house with same issue. Jenn-Air had issued a technical bulletin as the temperature probe is mounted directly to the heating element, and measures the heat of the element, not the oven. Their fix is a revised temperature probe that goes at a 90 degree angle away from the heating element.

If your temperature is consistent, just off by a set amount of degrees, there is an adjustment you can make at the control panel.

http://www.applianceaid.com/nuker.html
click the link  Oven temp sensors sense the temperature is the oven cavity and the temp sensor changes resistance, this change in ohm resistance tells the oven control what temperature the oven cavity at and tells the control to shut off the element or turn it back on. The most common temp sensors used today ( *not all ) are approx 1000-1100 ohm resistance at room temperature ( 70�F )
Some ohm readings and there temperature:
Degrees F    -   Resistance
            100 - 1143 ohms
             200 - 1350 ohms
             300 - 1553 ohms
             350 - 1654 ohms
             400 - 1753 ohms
            500 - 1949 ohms


click this link
http://www.applianceaid.com/elecrange.html

I have just checked the baking guide in the manual and have found that it may not be us after all. (Maybe this is why they telll us to read the whole manual. Well, I never have) According to the cooking time for Baking, the range is very extensive. For example, an angel cake at 350 could take from 28-50 minutes, buscuits at 375-400 could take 8-16 minutes, layer cakes at 350-375 could take 25-40 minutes, pound cakes at 325-350 could take 45-70 minutes and fresh pies at 400-450 could take 35-60 minutes. Basically, the baking directions on the box means absolutely nothing to use Amana oven owners. We have no choice but to cook our food or baked goods until they are cooked, whenever that may be. :) Linda